Pair of pliers on the old knob (make sure it is in the off position) and a hefty tug. The new one will push on by hand, push it all the way in so it is flush to the fascia and then click it to check the pop out mechanism works ok. The knob is a D shaped fitting with the flat part of the D at the top.Hope this helps. You may find when you tug at the old knob, the cover comes off and you are left with the black portion still in position, if this happens, reposition the pliers on the protruding black lug and give it another pull, this will get out the remaining part of the knob.
There may be a problem with the cooling or extraction fan on the oven. All Neff appliances come with a two year manufacturers warranty, so I would advise you call them out on 0844 892 8999. If you attempt a repair yourself, you could invalidate the warranty.
All the best.
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TUTORIALS1, If the Neff fan motorin the back of the oven is going round and
the temperature light is on (normally little red light), but there is no heat
then you will probably need a new oven element, these are generally very easy
to fit and readily available from our website these can be tested with a
electric meter. To gain access to the NEFFelement you will
have to remove the back plate from inside the oven. Once removed you will see
the fan and element, if you
look closely at the elementyou will
probably see a small hole burnt in it where it has blown. Sometimes however
there is no evidence of a fault but the elementis open circuit ie:
broken inside the element casing, either way it will need replacing. Some
elements will are fixed from inside the oven and some are held in place by nuts
from the rear of the machine. 2, If your NEFF fan
oven is getting warm but takes a very long time to cook or is burning the food
more on one side than the other, then you need to check if your oven fan motoris working you will
see the blade turning fast if it is ok. if the element is heating but the fan motoris not blowing the heat into the oven then
you need To replace the oven fan motoris a little more
expensive and a bit more involved. 3. If you have the opposite problem ie: your oven is over heating
and burning everything then you will need to replace your NEFF oven thermostat 4, A quite common and easily overlooked answer is if your NEFF oven is not working at all ie: no
heat and no fan then the chances are that someone has put the oven timerinto AUTO mode,
simply put oven back to MANUAL mode and all should be working again.
